I have Googled through many of the posts concerning this issue but cannot find a definite response or fix/solution. I am getting an SMTP connection from an outside source that is attempting to validate (The AD security log files show Event ID's 681 - Failed Logon and 529 - Unknown username password) using Kerberos. At the same time the E2K application event log (MSExchangeTransport turned up to Max) is logging the 1706 error -
It is treating exchange02 as the user and corp as the domain in the AD security log entry. It only happens with certain hosts and only happens about 5 - 6 times a day with hundreds of other hosts connecting without this logon attempt. I don't believe my database is corrupted.
Is there something turned on my E2K server that tells these hosts to try to negotiate logon?